SPMWHT541MP5WATHS4

Part Overview

The SPMWHT541MP5WATHS4 is an LED lighting component from the Samsung Semiconductor LM561B Plus series, specifically a white neutral 4000K surface-mount LED. This part is classified as "Not For New Designs," indicating its obsolescence in current product development cycles. Finding equivalent substitute parts is necessary to maintain design flexibility, ensure supply chain continuity, and support existing inventory management for ongoing manufacturing operations.

Substiute Parts

SPMWHT541MP5WATHS4

Samsung Semiconductor, Inc.In Stock: 1059SPMWHT541MP5WATHS4 Datasheet

Current PartRFQ

SPMWHT541MP5WAT0S4

Samsung Semiconductor, Inc.In Stock: 1117SPMWHT541MP5WAT0S4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATKS4

Samsung Semiconductor, Inc.In Stock: 165486SPMWHT541MP5WATKS4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATMS4

Samsung Semiconductor, Inc.In Stock: 600211SPMWHT541MP5WATMS4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATNS4

Samsung Semiconductor, Inc.In Stock: 855SPMWHT541MP5WATNS4 Datasheet

Parametric EquivalentRFQ

SPMWHT541MP5WATSS4

Samsung Semiconductor, Inc.In Stock: 666SPMWHT541MP5WATSS4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPMWHT541MP5WATHS4 are identified based on strict parametric equivalence within the Samsung LM561B Plus product line. All substitute parts maintain identical electrical specifications: 4000K neutral white color temperature, 2.95V forward voltage, 65mA test current, 180mA maximum current, 33lm luminous flux at 25°C, 172 lm/W efficacy, 120° viewing angle, and CRI 80. All substitutes employ the same 4-SMD flat leads package (5630) with matching 5.00mm × 3.00mm footprint dimensions and 0.80mm seated height.

The key differentiating parameters across substitute variants are thermal resistance (ranging from 14°C/W to 16°C/W), product status (Active vs. Not For New Designs), RoHS certification type (RoHS Compliant vs. ROHS3 Compliant), and inventory availability. These variations stem from manufacturing process refinements and compliance updates across the product line but do not alter the core electrical or mechanical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

SPMWHT541MP5WATKS4 is the preferred choice for new applications within the LM561B Plus series due to its Active product status and significantly superior inventory availability (165,400 units). This part meets all electrical and mechanical equivalence requirements while offering long-term supply continuity.

SPMWHT541MP5WATMS4 provides an additional high-inventory option (600,200 units) with Active status and ROHS3 Compliant certification, which may be required for specific regulatory or procurement frameworks. Thermal resistance is equivalent to the original part (16°C/W).

SPMWHT541MP5WAT0S4 and SPMWHT541MP5WATNS4 are both Active alternatives with RoHS Compliant status and moderately improved thermal resistance (15°C/W). These parts are suitable for supply continuity when primary options are unavailable, though inventory levels are lower than the WATKS4 variant.

SPMWHT541MP5WATSS4 offers the lowest thermal resistance (14°C/W) and ROHS3 Compliant certification, making it suitable for thermally constrained applications. However, inventory availability is the lowest among Active variants (624 units).

The original SPMWHT541MP5WATHS4 designation should be phased out in favor of Active variants to ensure sustained component availability and compliance with current regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can the substitute parts be used as direct replacements without design modifications?

A: Yes, all qualified substitute parts maintain identical electrical parameters (forward voltage, test current, maximum current, luminous flux) and mechanical specifications (package type, footprint, height). Direct board-level substitution is compatible.

Q: What is the significance of thermal resistance variation across the substitute parts?

A: Thermal resistance values range from 14°C/W to 16°C/W, reflecting manufacturing process variations and thermal design improvements. For applications with stringent thermal budgets, SPMWHT541MP5WATSS4 (14°C/W) offers superior thermal performance. Standard thermal design applications can use parts with 15°C/W or 16°C/W thermal resistance without performance degradation.

Q: Why are some parts classified as Active while the original is Not For New Designs?

A: The original SPMWHT541MP5WATHS4 designation has reached end-of-life status, meaning Samsung has discontinued new production. The substitute parts are current production variants with identical specifications, ensuring design continuity and future supply availability. New designs should select from the Active product status variants.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: ROHS3 Compliant represents a more recent or stricter certification level. Both certifications meet hazardous substance reduction standards. ROHS3 variants (SPMWHT541MP5WATMS4 and SPMWHT541MP5WATSS4) may be preferred for procurement requiring updated compliance documentation.

Q: Are all parts available in the same Tape & Reel packaging?

A: Yes, all substitute parts and the original part are supplied in Tape & Reel (TR) packaging format, maintaining identical handling, storage, and assembly compatibility.

Q: Does color temperature remain constant across all substitute variants?

A: Yes, all parts deliver 4000K neutral white color with CRI 80 and identical luminous flux of 33lm at rated test conditions. Color consistency is maintained across the entire substitution group.

Q: What inventory considerations should influence part selection?

A: SPMWHT541MP5WATKS4 and SPMWHT541MP5WATMS4 provide the highest inventory levels, ensuring long-term supply availability. For high-volume production programs, these variants reduce supply chain risk.